This is a picture that I stole from a LEAF driver who drove the inaugural Oregon Electric Highway yesterday, in mild March (jacket wearing) weather. After multiple quick charges to 80-90% every 25 miles, this is the result. The number 9 temperature bar is over 52.5C/126F.

TonyWilliams wrote:....After multiple quick charges to 80-90% every 25 miles, this is the result. The number eight temperature bar is over 50C/122F....

How many charges, over how many miles, in how much time?

Fair albeit argumentative questions. It will be tough to find out all the relevant information without access to QC, and proper instrumentation. I can assure you however that some of this information could have been gleaned from LEAF tour and motorshow photos. Generally, you would see cars with 7 and 8 temp bars there. Highly unusual, considering our collective experience last year. Nissan presumably uses QC liberally at these events. Also, Nissan's statement that it's OK to QC if the battery temp gauge is not in the red zone, would imply that heat development is a key factor. There are a few people with direct QC experience out there, and perhaps they can chime in.

TonyWilliams wrote:After multiple quick charges to 80-90% every 25 miles, this is the result.

While I can see making a point of charging at each station for an inaugural run, I don't understand why he would have charged to 80-90% every 25 miles. Undoubtedly there is more battery warming when repeatedly quick charging at higher SOCs. My guess is that his battery would have been happier if he had stopped each charge at, say, 50-60% if he only intended to drive 25 miles to the next charger.

These Dutch guys drove 780 miles in 24 hours by repeatedly quick charging, and apparently did not have battery temperature issues. But they were driving more miles between charges, and starting each charge at a lower SOC.